title: Artificial magnetism and left-handed media from dielectric rings and rods.
abstract: It is shown that artificial magnetism with relatively large frequency bandwidth can be obtained from periodic arrangements of dielectric rings. Combined with dielectric rods, dielectric rings can provide 3D isotropic left-handed metamaterials which are an advantageous alternative to metallic split ring resonators (SRRs) and/or metallic wires when undetectability by low frequency external magnetic fields is desired. Furthermore it is shown that, unlike conventional SRRs, dielectric rings can also be combined with natural plasma-like media to obtain a left-handed metamaterial.
authors.affiliation: Department of Electromagnetic Field, Czech Technical University in Prague, 166 27-Prague, Czech Republic. l jelinek@us.es
authors.forename: L
authors.initials: L
authors.lastname: Jelinek
authors.forename: R
authors.initials: R
authors.lastname: Marqués